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| All Patents in class 417/218 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,208,259 | Dec. 12, 1916 | A. Winton | Fuel Feed for Internal Combustion Motors | ||
| 1,870,501 | Aug. 09, 1932 | W. Ernst | Plural Pressure Pump Control for Hydraulic Presses | ||
| 1,952,663 | Mar. 27, 1934 | W. Ernst | Control Mechanism for Pumps and Associated Press Circuits | ||
| 1,989,891 | Feb. 05, 1935 | C.G. Sprado | Fuel Injection Device | ||
| 2,430,394 | Nov. 04, 1947 | R.H. Shepard, B.E. Folke | Hydraulic Pump | ||
| 2,467,916 | Apr. 19, 1949 | R.H. Shepard | Hydraulic Pump | ||